EP 0299278 A2 19890118 - Multi-directional signal transmission in a blast initiation system.
Title (en)
Multi-directional signal transmission in a blast initiation system.
Title (de)
Vorrichtung zur allseitigen Signalübertragung in einem Spreng-Zündsystem.
Title (fr)
Dispositif de transmission de signaux multidirectionnel dans un système d'allumage pour le sautage.
Publication
Application
Priority
US 7254487 A 19870713
Abstract (en)
The invention provides a connector, a transmitter, a bi-directional device, and a method for increasing the reliability of borehole detonation by using the connectors and transmitters provided by the invention. The invention provides connectors, each connector having a well for receiving a blasting cap, one or more ports or channels for receiving a transmission line and/or downline, and means for joining one connector with another connector in a convenient manner. The connectors are constructed so that detonation of a blasting cap in one connector will cause sympathetic detonation of a blasting cap in an adjoining connector. The detonation of blasting caps in the connectors also causes initiation of transmission lines and/or downlines which are inserted in the ports or channels through the connectors. A transmitter is comprised of one or more of these connectors with the transmission lines being arranged so that the transmitter receives a signal from one line and outputs it to at least one other transmission line or downline. A bi- directional device is provided that consists of a transmission line with blasting caps attached to each end and the caps are inserted into the wells of connectors as described below. The method of the present invention includes the use of the transmitters and arranging them such that there are at least two signal paths from which a transmitter may receive an initiation signal.
IPC 1-7
IPC 8 full level
F42D 1/04 (2006.01)
CPC (source: EP US)
F42D 1/043 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0299278 A2 19890118; EP 0299278 A3 19891025; AU 1773288 A 19890119; AU 620549 B2 19920220; BR 8803498 A 19890131; CA 1326528 C 19940125; JP S6428500 A 19890131; MX 165207 B 19921030; NO 883107 D0 19880712; NO 883107 L 19890116; US 4821645 A 19890418; ZA 883832 B 19881213
DOCDB simple family (application)
EP 88110332 A 19880629; AU 1773288 A 19880615; BR 8803498 A 19880712; CA 571736 A 19880712; JP 17284388 A 19880713; MX 1223588 A 19880713; NO 883107 A 19880712; US 7254487 A 19870713; ZA 883832 A 19880527